|[[File:Oct91.png|thumb|150px|Windows NT October 1991 pre-release]]'''[[Windows NT 3.1 1991-10 build|October 1991 release]]''' of Windows NT 3.1 was compiled for the COMDEX Trade Show in 1991-10. Interestingly, this build does not have a build number, unlike both earlier and later builds. Instead, Winver displays "Version VERSION" in place of the actual version number. It is speculated this build was rushed to completion so it was ready in time for the show, which could be the reason for the lack of a build number and MIPS port.

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|[[File:Windows-Premiere1.0-Desktop.png|thumb|150px|Windows 1.0 Premiere Edition]]'''[[Windows 1.0 Premiere Edition]]''' is a pre-release version of [[Windows 1.0|Microsoft Windows 1.0]]. It was originally sent to key players in the computer industry by Microsoft to prove that their product wasn't vaporware. Before releasing the official version, [[Windows 1.01]], the memory management code had to be completely rewritten; this would be the key difference between Premiere and 1.01.

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A build was leaked in 2008 purporting to be the Premiere Edition. The 2008 build still remains available on several websites, but it is a known fake. In 2014-03, [[BetaArchive]] user trueyanksfan claimed to have the real floppies, and also posted a photo of them. On 2014-12-18, a set of disk images from the real Premiere Edition was released by the BetaArchive user Alias, through mrpijey.

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It is also one of few Windows NT builds before Longhorn to have a fully graphical setup, a feature which has not returned until [[Windows:Longhorn:4001:main|Longhorn build 4001]] with its WIM-based setup.

...that there was a test for Windows NT 3.5x to see if it could use the Windows 95 shell, namely NewShell/Technology Preview?

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Windows 1.0 Premiere Edition

Windows 1.0 Premiere Edition is a pre-release version of Microsoft Windows 1.0. It was originally sent to key players in the computer industry by Microsoft to prove that their product wasn't vaporware. Before releasing the official version, Windows 1.01, the memory management code had to be completely rewritten; this would be the key difference between Premiere and 1.01.

A build was leaked in 2008 purporting to be the Premiere Edition. The 2008 build still remains available on several websites, but it is a known fake. In 2014-03, BetaArchive user trueyanksfan claimed to have the real floppies, and also posted a photo of them. On 2014-12-18, a set of disk images from the real Premiere Edition was released by the BetaArchive user Alias, through mrpijey.